Pennsylvania · Battery
Proposed battery projects in Pennsylvania
There are 18 proposed battery projects in Pennsylvania's interconnection queue, totaling 1.94 GW of requested capacity. The largest is Shallow Seam BESS at 400 MW, and the median planned online year is 2026.
18
Proposed projects
1.94 GW
Requested capacity
107.9 MW
Average project size
2026
Median planned online year
All proposed battery projects in Pennsylvania
| Type | ||||
|---|---|---|---|---|
| Shallow Seam BESS C24-233 | Battery | 400 MW | 2024 | 2029 |
| Queue AH2-103 AH2-103 | Battery | 200 MW | 2022 | 2026 |
| Erie East Energysusp. AE2-299 | Battery | 160 MW | 2019 | 2026 |
| ACE Development Company, LLC project AG2-621 | Battery | 150 MW | 2025 | 2023 |
| Energy Mountainsusp. AD2-077 | Battery | 150 MW | 2018 | 2029 |
| Queue AI1-181 AI1-181 | Battery | 140 MW | 2022 | 2027 |
| Queue AH2-335 AH2-335 | Battery | 130 MW | 2022 | 2025 |
| Queue AI1-188 AI1-188 | Battery | 130 MW | 2022 | 2027 |
| Queue AJ1-016 AJ1-016 | Battery | 100 MW | 2023 | 2028 |
| Queue AH2-422 AH2-422 | Battery | 83 MW | 2022 | 2025 |
| Poseidon Storage AH1-249 | Battery | 80 MW | 2025 | 2024 |
| Lafayette Storage AH1-206 | Battery | 60 MW | 2025 | 2024 |
| Queue AH2-420 AH2-420 | Battery | 50 MW | 2022 | 2025 |
| Queue AH2-244 AH2-244 | Battery | 25 MW | 2022 | 2023 |
| Queue AH2-245 AH2-245 | Battery | 25 MW | 2022 | 2023 |
| Fayette Energy Facility AF2-029 | Battery | 20 MW | 2019 | 2028 |
| Momentum Gratzsusp. AF1-040 | Battery | 20 MW | 2019 | 2024 |
| Ontelaunee Power Generating Plant AF2-030 | Battery | 20 MW | 2019 | 2029 |
Browse Pennsylvania's full interconnection queue. Compare with operating capacity: 4 operating storage plants in Pennsylvania. Nationwide: Storage plants nationwide.
Source: "Queued Up" (Rand et al., Lawrence Berkeley National Laboratory, 2026 edition) (data as of December 31, 2025).